Noncentrosymmetric chalcohalide K2Ba3Ge3S9Cl2: A new nonlinear optical material with remarkable laser-induced damage threshold

Wenfeng Zhou,Zhi-Hui Shi,Wenlong Liu,Sheng-Ping Guo

Journal of Alloys and Compounds（2022）

Cited 11|Views3

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Abstract

•A new chalcohalide K2Ba3Ge3S9Cl2 was obtained by a solid-state reaction.•K2Ba3Ge3S9Cl2 exhibits the largest band gap (3.69 eV) among all Ba-based chalcohalides.•K2Ba3Ge3S9Cl2 has a remarkable high LIDT of 339.3 MW/cm2, which is 28.8 times that of AgGaS2.•The experimental results are well verified by theoretical calculations.

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Key words

chalcohalide,crystal structure,second-harmonic generation,laser-induced damage threshold,theoretical calculation

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